Frederick W Smith Intl/Memphis Airport to Luis Munoz Marin International MEM → SJU
1,619 nautical miles (1,863 statute miles) southeast on a straight line, true course 122°, about 123° magnetic at the departure end (variation 1W). At 120 knots that is 11 h 15 min at the quickest height in today's winds (34,000 ft, a 24-knot tailwind), arriving about 8:25 pm AST (00:25 UTC), after sunset at the destination. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 1,222 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- SIGMET E41E: thunderstorms (a convective SIGMET) up to 44,000 ft, moving from the west at 10 knots, until 9:55 am CDT (14:55 UTC). Over the route from 690 to 739 nm out.
as issued
WSUS31 KKCI 121255 MKCE WST 121255 CONVECTIVE SIGMET 41E VALID UNTIL 1455Z FL CSTL WTRS FROM 160E OMN-230ENE TRV-70ENE PBI-50ENE TRV-160E OMN AREA TS MOV FROM 25010KT. TOPS TO FL440. REF INTL SIGMET CHARLIE SERIES.
- AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the route from 130 to 210 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 30,000 ft to 41,000 ft. Over the route from 400 to 600 nm out.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from MEM.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 UTC · at 120 knots true airspeed
The eastbound cruising heights for this course (VFR: odd thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 7 forecast points nearest it (MEM, BHM, CSG, TLH, JAX, MLB, MIA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 310° at 8 kt | −8 kt | 128 kt | 12 h 39 min | 9:49 pm AST (01:49 UTC) | |
| 5,500 ft | 300° at 8 kt | −8 kt | 128 kt | 12 h 39 min | 9:49 pm AST (01:49 UTC) | |
| 7,500 ft | 310° at 8 kt | −8 kt | 15 °C | 128 kt | 12 h 39 min | 9:49 pm AST (01:49 UTC) |
| 9,500 ft | 310° at 8 kt | −8 kt | 12 °C | 128 kt | 12 h 39 min | 9:49 pm AST (01:49 UTC) |
| 11,500 ft | 300° at 8 kt | −8 kt | 8 °C | 128 kt | 12 h 39 min | 9:49 pm AST (01:49 UTC) |
| 13,500 ft | 300° at 9 kt | −9 kt | 4 °C | 129 kt | 12 h 33 min | 9:43 pm AST (01:43 UTC) |
| 15,500 ft | 290° at 10 kt | −10 kt | 0 °C | 130 kt | 12 h 27 min | 9:37 pm AST (01:37 UTC) |
| 17,500 ft | 290° at 12 kt | −11 kt | -5 °C | 131 kt | 12 h 22 min | 9:32 pm AST (01:32 UTC) |
| 18,000 ft FL180 | 290° at 12 kt | −12 kt | -6 °C | 132 kt | 12 h 16 min | 9:26 pm AST (01:26 UTC) |
| 24,000 ft FL240 | 290° at 13 kt | −12 kt | -17 °C | 132 kt | 12 h 16 min | 9:26 pm AST (01:26 UTC) |
| 30,000 ft FL300 | 300° at 20 kt | −20 kt | -32 °C | 140 kt | 11 h 34 min | 8:44 pm AST (00:44 UTC) |
| 34,000 ft FL340 | 290° at 25 kt | −24 kt | -41 °C | 144 kt | 11 h 15 min | 8:25 pm AST (00:25 UTC) |
| 39,000 ft FL390 | 300° at 21 kt | −20 kt | -52 °C | 140 kt | 11 h 34 min | 8:44 pm AST (00:44 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| MEM | used from 0 nm out; 25 nm from the line | 250/19 | 260/19 17° | 270/20 12° | 270/16 6° | 270/21 -6° | 290/27 -17° | 300/37 -30° | 300/49 -40° | 310/40 -51° |
| BHM | used from 100 nm out; 59 nm from the line | 310/19 | 310/15 16° | 320/19 11° | 330/15 5° | 330/23 -5° | 320/14 -18° | 320/36 -32° | 330/44 -40° | 340/36 -51° |
| CSG | used from 250 nm out; 21 nm from the line | 330/27 | 340/28 16° | 350/28 11° | 330/17 6° | 340/25 -6° | 350/33 -18° | 330/46 -32° | 340/45 -41° | 350/31 -52° |
| TLH | used from 350 nm out; 78 nm from the line | 340/23 | 350/26 17° | 350/21 11° | 300/13 6° | 320/25 -6° | 340/35 -16° | 350/44 -32° | 360/51 -42° | 350/33 -52° |
| JAX | used from 400 nm out; 75 nm from the line | 310/22 | 310/19 16° | 300/22 14° | 290/25 8° | 300/25 -7° | 300/24 -18° | 270/20 -33° | 260/25 -41° | 290/17 -51° |
| MLB | used from 600 nm out; 75 nm from the line | 290/10 | 260/15 18° | 290/12 13° | 280/13 8° | 250/20 -7° | 260/18 -18° | 240/17 -32° | 250/20 -41° | 250/22 -52° |
| MIA | used from 799 nm out; 199 nm from the line | L/V | L/V 17° | L/V 13° | L/V 8° | 270/6 -6° | 250/9 -17° | 290/17 -32° | 280/25 -41° | 280/21 -52° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| MEM Memphis, TN | departure | no report just now | 340 ft | ||||
| TUP Tupelo, MS | 80 nm out, 9 nm southwest of the line, tower | no report just now | 346 ft | ||||
| AUO Auburn, AL | 270 nm out, 1 nm north of the line, tower | no report just now | 776 ft | ||||
| ABY Albany, GA | 360 nm out, 16 nm southwest of the line, tower | no report just now | 196 ft | ||||
| CRG Jacksonville, FL | 510 nm out, 6 nm northeast of the line, tower | no report just now | 40 ft | ||||
| SJU San Juan, PR | destination | no report just now | 9 ft |
The highest airport on this list sits at 776 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SJU when you get there the forecast at the estimated arrival, 8:25 pm AST (00:25 UTC)
SJU has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8389 Jacksonville, FL, Thursday, October 15, 2026 through Sunday, October 18, 2026 UTC on the route, 510 nm along the route · air shows/sports · starts Thursday 15 October · ZJX
- 6/8902 MAYPORT, FL, Tuesday, October 13, 2026 through Saturday, October 17, 2026 Local 8 nm from the route, 520 nm along the route · security · starts tomorrow · ZJX
- 6/8901 Cape Canaveral, FL, Thursday, October 15, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts Thursday 15 October · ZJX
- 6/8900 Cape Canaveral, FL, Wednesday, October 14, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts Wednesday 14 October · ZMA
- 6/8896 Cape Canaveral, FL, Tuesday, October 13, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts tomorrow · ZJX
- 6/8897 Cape Canaveral, FL, Wednesday, October 14, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts Wednesday 14 October · ZJX
- 6/8898 Cape Canaveral, FL, Thursday, October 15, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts Thursday 15 October · ZMA
- 6/8899 Cape Canaveral, FL, Tuesday, October 13, 2026 Local 19 nm from the route, 610 nm along the route · a rocket launch or re-entry · starts tomorrow · ZMA
- 6/4508 CEIBA, PR 24 nm from the route, at the destination end · security · ZSU
Daylight
Sunset at MEM 6:29 pm CDT (23:29 UTC), at SJU 6:03 pm AST (22:03 UTC) (civil twilight ends 6:25 pm AST (22:25 UTC)). At 120 knots the arrival at SJU is after sunset there (6:03 pm AST (22:03 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Frederick W Smith Intl/Memphis Airport, Luis Munoz Marin International.